diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 9a8fefd5b..475404b87 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -1,6 +1,6 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config --auto-gen-only-exclude --no-exclude-limit`
-# on 2026-07-28 07:06:57 UTC using RuboCop version 1.88.2.
+# on 2026-07-28 07:23:34 UTC using RuboCop version 1.88.2.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
@@ -1059,46 +1059,6 @@ Style/StringConcatenation:
     - 'spec/features/admin/manage_sponsor_spec.rb'
     - 'spec/presenters/workshop_presenter_spec.rb'
 
-# Offense count: 173
-# This cop supports safe autocorrection (--autocorrect).
-# Configuration parameters: EnforcedStyle, ConsistentQuotesInMultiline.
-# SupportedStyles: single_quotes, double_quotes
-Style/StringLiterals:
-  Exclude:
-    - 'Gemfile'
-    - 'app/controllers/admin/chapters_controller.rb'
-    - 'app/controllers/events_controller.rb'
-    - 'app/mailers/member_mailer.rb'
-    - 'app/models/workshop.rb'
-    - 'lib/omniauth/strategies/codebar.rb'
-    - 'script/benchmark_events.rb'
-    - 'spec/components/event_card_component_spec.rb'
-    - 'spec/controllers/admin/invitations_controller_spec.rb'
-    - 'spec/controllers/admin/member_search_controller_spec.rb'
-    - 'spec/controllers/auth_services_controller_spec.rb'
-    - 'spec/controllers/members_controller_spec.rb'
-    - 'spec/fabricators/member_email_delivery_fabricator.rb'
-    - 'spec/features/accepting_invitation_spec.rb'
-    - 'spec/features/admin/manage_sponsor_spec.rb'
-    - 'spec/features/member_joining_spec.rb'
-    - 'spec/features/member_updating_details_spec.rb'
-    - 'spec/features/viewing_a_workshop_invitation_spec.rb'
-    - 'spec/features/viewing_a_workshop_spec.rb'
-    - 'spec/lib/services/flodesk_spec.rb'
-    - 'spec/lib/services/mailing_list_spec.rb'
-    - 'spec/lib/tasks/delete_member_rake_spec.rb'
-    - 'spec/lib/tasks/mailing_list_rake_spec.rb'
-    - 'spec/mailers/member_mailer_spec.rb'
-    - 'spec/mailers/previews/meeting_invitation_mailer_preview.rb'
-    - 'spec/models/event_spec.rb'
-    - 'spec/models/meeting_spec.rb'
-    - 'spec/models/workshop_spec.rb'
-    - 'spec/presenters/workshop_presenter_capacity_spec.rb'
-    - 'spec/serializers/workshop_calendar_spec.rb'
-    - 'spec/services/three_month_email_service_spec.rb'
-    - 'spec/support/select_from_tom_select.rb'
-    - 'spec/support/shared_examples/behaves_link_member_viewing_workshop.rb'
-
 # Offense count: 10
 # This cop supports safe autocorrection (--autocorrect).
 # Configuration parameters: EnforcedStyle, MinSize.
diff --git a/Gemfile b/Gemfile
index 2b0d4b1b0..59cb18f2d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -132,4 +132,4 @@ gem 'scout_apm'
 gem 'carrierwave-aws', '~> 1.6'
 gem 'sitemap_generator', '~> 7.1'
 
-gem "solid_cache", "~> 1.0"
+gem 'solid_cache', '~> 1.0'
diff --git a/app/controllers/admin/chapters_controller.rb b/app/controllers/admin/chapters_controller.rb
index 3ee35731f..0e8aaf488 100644
--- a/app/controllers/admin/chapters_controller.rb
+++ b/app/controllers/admin/chapters_controller.rb
@@ -114,9 +114,9 @@ def set_chapter
   def member_emails(chapter, type)
     members =
       case type
-      when "students"
+      when 'students'
         chapter.students
-      when "coaches"
+      when 'coaches'
         chapter.coaches
       else
         chapter.members
diff --git a/app/controllers/events_controller.rb b/app/controllers/events_controller.rb
index aeecab00a..bb3efbfd4 100644
--- a/app/controllers/events_controller.rb
+++ b/app/controllers/events_controller.rb
@@ -101,7 +101,7 @@ def fetch_past_events
   def paginated_events(upcoming:)
     now = Time.zone.now
     page = (params[:page] || 1).to_i
-    direction = upcoming ? "ASC" : "DESC"
+    direction = upcoming ? 'ASC' : 'DESC'
     comparator = upcoming ? :gteq : :lt
 
     # Pure Arel subqueries — no ActiveRecord relation bind params to leak
@@ -128,7 +128,7 @@ def paginated_events(upcoming:)
 
     # COUNT at DB level — single query
     count_query = Arel::SelectManager.new
-    count_query.from(union.as("events"))
+    count_query.from(union.as('events'))
     count_query.project(Arel.star.count)
     total = ActiveRecord::Base.connection.select_value(count_query.to_sql).to_i
     return nil if total.zero?
@@ -139,7 +139,7 @@ def paginated_events(upcoming:)
 
     # Only 20 rows leave the database
     pagination_query = Arel::SelectManager.new
-    pagination_query.from(union.as("events"))
+    pagination_query.from(union.as('events'))
     pagination_query.project(:id, :event_type)
     pagination_query.order(Arel.sql("date_and_time #{direction}"))
     pagination_query.skip(pagy.offset).take(pagy.limit)
@@ -152,23 +152,23 @@ def paginated_events(upcoming:)
   # with eager loading, preserving the UNION order.
   def load_events(rows)
     grouped = rows.each_with_object({}) do |row, hash|
-      (hash[row["event_type"]] ||= []) << row["id"].to_i
+      (hash[row['event_type']] ||= []) << row['id'].to_i
     end
 
     workshops = Workshop.includes(:chapter, :sponsors, :host, :permissions)
-                        .where(id: grouped["Workshop"])
+                        .where(id: grouped['Workshop'])
                         .to_a.index_by(&:id)
-    meetings = Meeting.includes(:venue).where(id: grouped["Meeting"])
+    meetings = Meeting.includes(:venue).where(id: grouped['Meeting'])
                       .to_a.index_by(&:id)
     events = Event.includes(:venue, :sponsors, :sponsorships, :permissions)
-                  .where(id: grouped["Event"])
+                  .where(id: grouped['Event'])
                   .to_a.index_by(&:id)
 
     rows.filter_map do |row|
-      case row["event_type"]
-      when "Workshop" then workshops[row["id"].to_i]
-      when "Meeting" then meetings[row["id"].to_i]
-      when "Event" then events[row["id"].to_i]
+      case row['event_type']
+      when 'Workshop' then workshops[row['id'].to_i]
+      when 'Meeting' then meetings[row['id'].to_i]
+      when 'Event' then events[row['id'].to_i]
       end
     end
   end
diff --git a/app/mailers/member_mailer.rb b/app/mailers/member_mailer.rb
index e5161a17e..323a68ef5 100644
--- a/app/mailers/member_mailer.rb
+++ b/app/mailers/member_mailer.rb
@@ -6,7 +6,7 @@ class MemberMailer < ApplicationMailer
 
   def chaser
     @member = params[:member]
-    subject = "It’s been a while, how are you doing? ♥️"
+    subject = 'It’s been a while, how are you doing? ♥️'
     mail_to_member(@member, subject, 'hello@codebar.io', 'hello@codebar.io') do |format|
       format.html { render 'three_month_chaser' }
     end
diff --git a/app/models/workshop.rb b/app/models/workshop.rb
index f99665941..ed398a8e7 100644
--- a/app/models/workshop.rb
+++ b/app/models/workshop.rb
@@ -161,6 +161,6 @@ def rsvp_close_before_workshop_start
     return unless rsvp_closes_at && date_and_time
     return if rsvp_closes_at < date_and_time
 
-    errors.add(:rsvp_close_local_date, "must be before the workshop start time")
+    errors.add(:rsvp_close_local_date, 'must be before the workshop start time')
   end
 end
diff --git a/lib/omniauth/strategies/codebar.rb b/lib/omniauth/strategies/codebar.rb
index 234e822ec..1e61da0dd 100644
--- a/lib/omniauth/strategies/codebar.rb
+++ b/lib/omniauth/strategies/codebar.rb
@@ -187,7 +187,7 @@ def verify_jwt(token)
           nil
         end
       rescue JWT::ExpiredSignature
-        Rails.logger.warn "Codebar auth: JWT expired"
+        Rails.logger.warn 'Codebar auth: JWT expired'
         nil
       end
 
diff --git a/script/benchmark_events.rb b/script/benchmark_events.rb
index 91f721807..0afb189e2 100755
--- a/script/benchmark_events.rb
+++ b/script/benchmark_events.rb
@@ -1,17 +1,17 @@
 #!/usr/bin/env ruby
 # Run: DB_NAME=codebar_dump bundle exec ruby script/benchmark_events.rb
-ENV["RAILS_ENV"] ||= "development"
-require_relative "../config/environment"
-require "benchmark"
+ENV['RAILS_ENV'] ||= 'development'
+require_relative '../config/environment'
+require 'benchmark'
 
 session = ActionDispatch::Integration::Session.new(Rails.application)
-session.host = "localhost"
+session.host = 'localhost'
 
 def measure(session, path)
   qc = 0
   cb = ->(*, **) { qc += 1 }
   time = nil
-  ActiveSupport::Notifications.subscribed(cb, "sql.active_record") do
+  ActiveSupport::Notifications.subscribed(cb, 'sql.active_record') do
     time = Benchmark.measure { session.get(path) }
   end
   [time.real, qc]
diff --git a/spec/components/event_card_component_spec.rb b/spec/components/event_card_component_spec.rb
index 433864037..f831b365e 100644
--- a/spec/components/event_card_component_spec.rb
+++ b/spec/components/event_card_component_spec.rb
@@ -1,66 +1,66 @@
-require "rails_helper"
-require "view_component/test_helpers"
+require 'rails_helper'
+require 'view_component/test_helpers'
 
 RSpec.describe EventCardComponent, type: :component do
   include ViewComponent::TestHelpers
   let(:chapter) { Fabricate(:chapter, active: true) }
 
-  context "with a workshop" do
+  context 'with a workshop' do
     let(:workshop) { Fabricate(:workshop, chapter: chapter) }
     let(:presenter) { WorkshopPresenter.new(workshop) }
 
-    it "renders the workshop card" do
+    it 'renders the workshop card' do
       render_inline(described_class.new(event_card: presenter))
       expect(page).to have_css("[data-test='event']")
       expect(page).to have_link(presenter.to_s)
       expect(page).to have_text(presenter.date)
     end
 
-    it "does not render user-specific badges without a user" do
+    it 'does not render user-specific badges without a user' do
       render_inline(described_class.new(event_card: presenter))
-      expect(page).to have_no_text("Attending")
-      expect(page).to have_no_text("Manage")
+      expect(page).to have_no_text('Attending')
+      expect(page).to have_no_text('Manage')
     end
 
-    it "renders chapter badge" do
+    it 'renders chapter badge' do
       render_inline(described_class.new(event_card: presenter))
       expect(page).to have_link(chapter.name)
     end
   end
 
-  context "with a meeting" do
+  context 'with a meeting' do
     let(:meeting) { Fabricate(:meeting) }
     let(:presenter) { MeetingPresenter.new(meeting) }
 
-    it "renders the meeting card" do
+    it 'renders the meeting card' do
       render_inline(described_class.new(event_card: presenter))
       expect(page).to have_css("[data-test='event']")
       expect(page).to have_link(presenter.name)
     end
 
-    it "renders venue image for meetings" do
+    it 'renders venue image for meetings' do
       render_inline(described_class.new(event_card: presenter))
       expect(page).to have_css(%(img[alt="#{meeting.venue.name}"]))
     end
 
-    it "does not render sponsor logos for meetings" do
+    it 'does not render sponsor logos for meetings' do
       render_inline(described_class.new(event_card: presenter))
       # Venue image has sponsor-sm class, so check for mx-1 spacing (used only by sponsors)
-      expect(page).to have_no_css(".mx-1")
+      expect(page).to have_no_css('.mx-1')
     end
   end
 
-  context "with an event" do
+  context 'with an event' do
     let(:event) { Fabricate(:event) }
     let(:presenter) { EventPresenter.new(event) }
 
-    it "renders the event card" do
+    it 'renders the event card' do
       render_inline(described_class.new(event_card: presenter))
       expect(page).to have_css("[data-test='event']")
       expect(page).to have_link(event.name)
     end
 
-    it "renders sponsor logos for events" do
+    it 'renders sponsor logos for events' do
       sponsor = Fabricate(:sponsor)
       event.sponsors << sponsor
       render_inline(described_class.new(event_card: presenter))
@@ -68,22 +68,22 @@
     end
   end
 
-  context "with a user" do
+  context 'with a user' do
     let(:workshop) { Fabricate(:workshop, chapter: chapter) }
     let(:presenter) { WorkshopPresenter.new(workshop) }
     let(:member) { Fabricate(:member) }
 
-    it "renders attending badge when user is attending (as presenter)" do
+    it 'renders attending badge when user is attending (as presenter)' do
       Fabricate(:workshop_invitation, workshop: workshop, member: member, attending: true)
       user_presenter = MemberPresenter.new(member)
       render_inline(described_class.new(event_card: presenter, user: user_presenter))
-      expect(page).to have_text("Attending")
+      expect(page).to have_text('Attending')
     end
 
-    it "renders attending badge when raw Member is passed" do
+    it 'renders attending badge when raw Member is passed' do
       Fabricate(:workshop_invitation, workshop: workshop, member: member, attending: true)
       render_inline(described_class.new(event_card: presenter, user: member))
-      expect(page).to have_text("Attending")
+      expect(page).to have_text('Attending')
     end
   end
 
diff --git a/spec/controllers/admin/invitations_controller_spec.rb b/spec/controllers/admin/invitations_controller_spec.rb
index 59bd91f3e..4858afba5 100644
--- a/spec/controllers/admin/invitations_controller_spec.rb
+++ b/spec/controllers/admin/invitations_controller_spec.rb
@@ -3,48 +3,48 @@
   let(:workshop) { invitation.workshop }
   let(:admin) { Fabricate(:chapter_organiser) }
 
-  describe "PUT #update" do
+  describe 'PUT #update' do
     before do
       admin.add_role(:organiser, workshop.chapter)
 
       login admin
-      request.env["HTTP_REFERER"] = "/admin/member/3"
+      request.env['HTTP_REFERER'] = '/admin/member/3'
     end
 
-    it "Successfuly updates an invitation" do
+    it 'Successfuly updates an invitation' do
       expect(invitation.attending).to be_nil
 
-      put :update, params: { id: invitation.token, workshop_id: workshop.id, attending: "true" }
+      put :update, params: { id: invitation.token, workshop_id: workshop.id, attending: 'true' }
 
       expect(invitation.reload.attending).to be true
-      expect(flash[:notice]).to match("You have added")
+      expect(flash[:notice]).to match('You have added')
     end
 
     # While similar to the previous test, this specifically tests that organisers
     # have the ability to manually add a student to the workshop that has not
     # selected a tutorial. This is helpful for when a student shows up for a
     # workshop they have not have a spot — this happens from time to time.
-    it "Successfuly adds a user as attenting, even without a tutorial" do
+    it 'Successfuly adds a user as attenting, even without a tutorial' do
       invitation.update_attribute(:tutorial, nil)
       expect(invitation.automated_rsvp).to be_nil
 
-      put :update, params: { id: invitation.token, workshop_id: workshop.id, attending: "true" }
+      put :update, params: { id: invitation.token, workshop_id: workshop.id, attending: 'true' }
       invitation.reload
 
       expect(invitation.attending).to be true
       expect(invitation.automated_rsvp).to be true
-      expect(flash[:notice]).to match("You have added")
+      expect(flash[:notice]).to match('You have added')
     end
 
-    it "Records the organiser ID that overrides an invitations" do
-      put :update, params: { id: invitation.token, workshop_id: workshop.id, attending: "true" }
+    it 'Records the organiser ID that overrides an invitations' do
+      put :update, params: { id: invitation.token, workshop_id: workshop.id, attending: 'true' }
       invitation.reload
 
       expect(invitation.last_overridden_by_id).to be admin.id
     end
   end
 
-  describe "PUT #update with attended param" do
+  describe 'PUT #update with attended param' do
     let(:workshop) { Fabricate(:workshop, date_and_time: Time.zone.now - 1.day) }
     let(:invitation) { Fabricate(:workshop_invitation, workshop: workshop, attending: true) }
     let(:admin) { Fabricate(:chapter_organiser) }
@@ -52,10 +52,10 @@
     before do
       admin.add_role(:organiser, workshop.chapter)
       login admin
-      request.env["HTTP_REFERER"] = "/admin/workshop/#{workshop.id}"
+      request.env['HTTP_REFERER'] = "/admin/workshop/#{workshop.id}"
     end
 
-    it "renders the attendance row partial via XHR when verifying" do
+    it 'renders the attendance row partial via XHR when verifying' do
       put :update, params: { id: invitation.token, workshop_id: workshop.id, attended: true }, xhr: true
 
       expect(response).to have_http_status(:success)
@@ -63,7 +63,7 @@
       expect(invitation.reload.attended).to be true
     end
 
-    it "renders the attendance row partial via XHR when unverifying" do
+    it 'renders the attendance row partial via XHR when unverifying' do
       invitation.update!(attended: true)
 
       put :update, params: { id: invitation.token, workshop_id: workshop.id, attended: false }, xhr: true
diff --git a/spec/controllers/admin/member_search_controller_spec.rb b/spec/controllers/admin/member_search_controller_spec.rb
index bf2f4258b..5ebcda1b3 100644
--- a/spec/controllers/admin/member_search_controller_spec.rb
+++ b/spec/controllers/admin/member_search_controller_spec.rb
@@ -2,17 +2,17 @@
   let(:member) { Fabricate.build(:member) }
 
   describe 'GET #index' do
-    context "when user is not logged in" do
+    context 'when user is not logged in' do
       before do
         get :index
       end
 
-      it "redirects to the home page" do
+      it 'redirects to the home page' do
         expect(response).to redirect_to(root_path)
       end
     end
 
-    context "when user is an admin" do
+    context 'when user is an admin' do
       let(:fake_relation) { instance_double('ActiveRecord::Relation') }
       let(:fake_juliet) { instance_double('Member', id: 1, name: 'Juliet', surname: 'Montague') }
 
@@ -21,28 +21,28 @@
         get :index
       end
 
-      it "shows user the search page" do
+      it 'shows user the search page' do
         expect(response).to have_http_status(:ok)
       end
 
-      context "and when admin user searches for a single existing user" do
+      context 'and when admin user searches for a single existing user' do
         before do
           allow(Member).to receive(:find_members_by_name).with('Juliet').and_return(fake_relation)
           allow(fake_relation).to receive(:select).with(any_args).and_return([fake_juliet])
-          get :index, params: { member_search: { name: "Juliet", callback_url: root_path } }
+          get :index, params: { member_search: { name: 'Juliet', callback_url: root_path } }
         end
 
-        it "redirects to the calling service" do
+        it 'redirects to the calling service' do
           expect(response).to have_http_status(:found)
 
           uri = URI.parse(response.location)
           redirect_params = Rack::Utils.parse_nested_query(uri.query)
 
-          expect(redirect_params["member_pick"]["members"]).to eq(["1"])
+          expect(redirect_params['member_pick']['members']).to eq(['1'])
         end
       end
 
-      context "and when an admin user searches and there are multiple results" do
+      context 'and when an admin user searches and there are multiple results' do
       let(:fake_romeo) { double('Member', id: 2, name: 'Romeo', surname: 'Capulet') }
 
       before do
@@ -51,7 +51,7 @@
         get :index, params: { member_search: { name: 'e', callback_url: root_path } }
       end
 
-      it "presents the found members on the index page" do
+      it 'presents the found members on the index page' do
         expect(response).to have_http_status(:ok)
       end
       end
diff --git a/spec/controllers/auth_services_controller_spec.rb b/spec/controllers/auth_services_controller_spec.rb
index 6e76484f6..ce3d5552b 100644
--- a/spec/controllers/auth_services_controller_spec.rb
+++ b/spec/controllers/auth_services_controller_spec.rb
@@ -1,20 +1,20 @@
 RSpec.describe AuthServicesController do
-  describe "GET #new" do
-    it "redirects when referer is missing" do
+  describe 'GET #new' do
+    it 'redirects when referer is missing' do
       expected_referer_path = nil
-      request.env["HTTP_REFERER"] = expected_referer_path
+      request.env['HTTP_REFERER'] = expected_referer_path
 
       get :new
-      expect(response).to redirect_to("/auth/github")
+      expect(response).to redirect_to('/auth/github')
       expect(session[:referer_path]).to eq(expected_referer_path)
     end
 
-    it "redirects when referer is present" do
-      expected_referer_path = "workshops/42"
-      request.env["HTTP_REFERER"] = expected_referer_path
+    it 'redirects when referer is present' do
+      expected_referer_path = 'workshops/42'
+      request.env['HTTP_REFERER'] = expected_referer_path
 
       get :new
-      expect(response).to redirect_to("/auth/github")
+      expect(response).to redirect_to('/auth/github')
       expect(session[:referer_path]).to eq(expected_referer_path)
     end
   end
diff --git a/spec/controllers/members_controller_spec.rb b/spec/controllers/members_controller_spec.rb
index e4e7d5b69..d54c3fc5e 100644
--- a/spec/controllers/members_controller_spec.rb
+++ b/spec/controllers/members_controller_spec.rb
@@ -1,15 +1,15 @@
 RSpec.describe MembersController do
-  describe "GET unsubscribe/#token" do
-    it "redirects to the subscription path when token is valid" do
+  describe 'GET unsubscribe/#token' do
+    it 'redirects to the subscription path when token is valid' do
       member = Fabricate(:member)
       get :unsubscribe, params: { token: member_token(member) }
       expect(response).to redirect_to(subscriptions_path)
     end
 
-    it "redirects to the root path when token is invalid" do
-      get :unsubscribe, params: { token: "foo" }
+    it 'redirects to the root path when token is invalid' do
+      get :unsubscribe, params: { token: 'foo' }
       expect(response).to redirect_to(root_path)
-      expect(flash[:notice]).to eq("Your token is invalid. ")
+      expect(flash[:notice]).to eq('Your token is invalid. ')
     end
   end
 end
diff --git a/spec/fabricators/member_email_delivery_fabricator.rb b/spec/fabricators/member_email_delivery_fabricator.rb
index f633b7a35..2b473815e 100644
--- a/spec/fabricators/member_email_delivery_fabricator.rb
+++ b/spec/fabricators/member_email_delivery_fabricator.rb
@@ -1,6 +1,6 @@
 Fabricator(:member_email_delivery) do
   member(fabricator: :member)
-  subject("Chaser")
-  body("Lorem ipsum")
-  to(["test_email@address"])
+  subject('Chaser')
+  body('Lorem ipsum')
+  to(['test_email@address'])
 end
diff --git a/spec/features/accepting_invitation_spec.rb b/spec/features/accepting_invitation_spec.rb
index fb6524946..07767ba69 100644
--- a/spec/features/accepting_invitation_spec.rb
+++ b/spec/features/accepting_invitation_spec.rb
@@ -102,7 +102,7 @@
           click_on 'Update note'
 
           expect(page).to have_field('workshop_invitation_note', with: note)
-          expect(page).to have_text("Invitation details successfully updated.")
+          expect(page).to have_text('Invitation details successfully updated.')
         end
       end
     end
diff --git a/spec/features/admin/manage_sponsor_spec.rb b/spec/features/admin/manage_sponsor_spec.rb
index e642f601f..a21fac6b9 100644
--- a/spec/features/admin/manage_sponsor_spec.rb
+++ b/spec/features/admin/manage_sponsor_spec.rb
@@ -17,7 +17,7 @@
         attach_file('Avatar', Rails.root + 'spec/support/codebar-logo.png')
         fill_in 'Student spots', with: 20
         fill_in 'Coach spots', with: 10
-        select "Bronze", from: "Level"
+        select 'Bronze', from: 'Level'
 
         click_on 'Create sponsor'
 
diff --git a/spec/features/member_joining_spec.rb b/spec/features/member_joining_spec.rb
index 79be504a1..8b1c67712 100644
--- a/spec/features/member_joining_spec.rb
+++ b/spec/features/member_joining_spec.rb
@@ -27,7 +27,7 @@
     expect(page).to have_text "Surname can't be blank"
     expect(page).to have_text "Email address can't be blank"
     expect(page).to have_text "About you can't be blank"
-    expect(page).to have_text "You must select one option"
+    expect(page).to have_text 'You must select one option'
   end
 
   scenario 'A new member details are successfully captured' do
diff --git a/spec/features/member_updating_details_spec.rb b/spec/features/member_updating_details_spec.rb
index 698c81b85..b103dad37 100644
--- a/spec/features/member_updating_details_spec.rb
+++ b/spec/features/member_updating_details_spec.rb
@@ -12,7 +12,7 @@
     click_on 'Save'
 
     expect(page).to have_text('Your details have been updated.')
-    expect(page).to have_css(".badge", text: "Vegetarian")
+    expect(page).to have_css('.badge', text: 'Vegetarian')
   end
 
   scenario 'A member adds a custom dietary restriction' do
@@ -25,7 +25,7 @@
     click_on 'Save'
 
     expect(page).to have_text('Your details have been updated.')
-    expect(page).to have_css(".badge", text: 'Peanut allergy')
+    expect(page).to have_css('.badge', text: 'Peanut allergy')
     member.reload
     expect(member.dietary_restrictions).to eq(['other'])
     expect(member.other_dietary_restrictions).to eq('peanut allergy')
diff --git a/spec/features/viewing_a_workshop_invitation_spec.rb b/spec/features/viewing_a_workshop_invitation_spec.rb
index 4d388977b..15e995783 100644
--- a/spec/features/viewing_a_workshop_invitation_spec.rb
+++ b/spec/features/viewing_a_workshop_invitation_spec.rb
@@ -50,7 +50,7 @@
       end
     end
 
-    include_examples "viewing workshop details"
+    include_examples 'viewing workshop details'
   end
 
   context 'virtual workshop' do
@@ -95,6 +95,6 @@
       end
     end
 
-    include_examples "viewing workshop details"
+    include_examples 'viewing workshop details'
   end
 end
diff --git a/spec/features/viewing_a_workshop_spec.rb b/spec/features/viewing_a_workshop_spec.rb
index 291c6bcd3..086f8dc6e 100644
--- a/spec/features/viewing_a_workshop_spec.rb
+++ b/spec/features/viewing_a_workshop_spec.rb
@@ -24,11 +24,11 @@
           end
         end
 
-        include_examples "viewing workshop details"
+        include_examples 'viewing workshop details'
       end
 
       describe '#actions' do
-        include_examples "viewing workshop actions"
+        include_examples 'viewing workshop actions'
       end
     end
 
@@ -53,11 +53,11 @@
           end
         end
 
-        include_examples "viewing workshop details"
+        include_examples 'viewing workshop details'
       end
 
       describe '#actions' do
-        include_examples "viewing workshop actions"
+        include_examples 'viewing workshop actions'
       end
     end
   end
diff --git a/spec/lib/services/flodesk_spec.rb b/spec/lib/services/flodesk_spec.rb
index ec7850fed..14d459b75 100644
--- a/spec/lib/services/flodesk_spec.rb
+++ b/spec/lib/services/flodesk_spec.rb
@@ -59,18 +59,18 @@
     it 'confirms that a user is active and subscribed to a segment' do
       payload = {
         email: :email,
-        segment_ids: ["segment_id"]
+        segment_ids: ['segment_id']
       }
 
       stub.get("/subscribers/#{payload[:email]}") do
         [200, {}, {
-          "id": "123456789",
-          "status": "active",
-          "email": "email",
+          "id": '123456789',
+          "status": 'active',
+          "email": 'email',
           "segments": [
             {
-              "id": "segment_id",
-              "name": "codebar"
+              "id": 'segment_id',
+              "name": 'codebar'
             }
           ]
         }]
@@ -84,18 +84,18 @@
     it 'confirms that a user is active but not subscribed to a segment' do
       payload = {
         email: :email,
-        segment_ids: ["segment_id"]
+        segment_ids: ['segment_id']
       }
 
       stub.get("/subscribers/#{payload[:email]}") do
         [200, {}, {
-          "id": "123456789",
-          "status": "active",
-          "email": "email",
+          "id": '123456789',
+          "status": 'active',
+          "email": 'email',
           "segments": [
             {
-              "id": "some_other_segment_id",
-              "name": "not codebar"
+              "id": 'some_other_segment_id',
+              "name": 'not codebar'
             }
           ]
         }]
@@ -109,18 +109,18 @@
     it 'confirms that a user is not active' do
       payload = {
         email: :email,
-        segment_ids: ["segment_id"]
+        segment_ids: ['segment_id']
       }
 
       stub.get("/subscribers/#{payload[:email]}") do
         [200, {}, {
-          "id": "123456789",
-          "status": "unsubscribed",
-          "email": "email",
+          "id": '123456789',
+          "status": 'unsubscribed',
+          "email": 'email',
           "segments": [
             {
-              "id": "segment_id",
-              "name": "codebar"
+              "id": 'segment_id',
+              "name": 'codebar'
             }
           ]
         }]
diff --git a/spec/lib/services/mailing_list_spec.rb b/spec/lib/services/mailing_list_spec.rb
index 997114a4a..9120eaeb1 100644
--- a/spec/lib/services/mailing_list_spec.rb
+++ b/spec/lib/services/mailing_list_spec.rb
@@ -11,7 +11,7 @@
     allow(ENV).to receive(:[]).and_call_original
     allow(ENV).to receive(:[]).with('FLODESK_KEY').and_return('test')
     allow(mailing_list).to receive(:client).and_return(client)
-    allow(Rails).to receive(:env).and_return("production".inquiry)
+    allow(Rails).to receive(:env).and_return('production'.inquiry)
   end
 
   context '#subscribe' do
diff --git a/spec/lib/tasks/delete_member_rake_spec.rb b/spec/lib/tasks/delete_member_rake_spec.rb
index b4bc8e357..38499d09f 100644
--- a/spec/lib/tasks/delete_member_rake_spec.rb
+++ b/spec/lib/tasks/delete_member_rake_spec.rb
@@ -5,8 +5,8 @@
     allow($stdout).to receive(:puts)
   end
 
-  it "preloads the Rails environment" do
-    expect(task.prerequisites).to include "environment"
+  it 'preloads the Rails environment' do
+    expect(task.prerequisites).to include 'environment'
   end
 
   it 'when no email is provided' do
diff --git a/spec/lib/tasks/mailing_list_rake_spec.rb b/spec/lib/tasks/mailing_list_rake_spec.rb
index a5298fa13..3498121c6 100644
--- a/spec/lib/tasks/mailing_list_rake_spec.rb
+++ b/spec/lib/tasks/mailing_list_rake_spec.rb
@@ -1,6 +1,6 @@
 RSpec.describe 'rake mailing_list:subscribe_active_members', type: :task do
-  it "preloads the Rails environment" do
-    expect(task.prerequisites).to include "environment"
+  it 'preloads the Rails environment' do
+    expect(task.prerequisites).to include 'environment'
   end
 
   it 'should run gracefully' do
diff --git a/spec/mailers/member_mailer_spec.rb b/spec/mailers/member_mailer_spec.rb
index 2fb16d590..f4ace5b85 100644
--- a/spec/mailers/member_mailer_spec.rb
+++ b/spec/mailers/member_mailer_spec.rb
@@ -168,8 +168,8 @@
     end
   end
 
-  describe "#chaser" do
-    it "logs the sent email" do
+  describe '#chaser' do
+    it 'logs the sent email' do
       expect do
         described_class
           .with(member: member)
@@ -180,7 +180,7 @@
       log = MemberEmailDelivery.last!
 
       expect(log.member).to eq(member)
-      expect(log.subject).to eq("It’s been a while, how are you doing? ♥️")
+      expect(log.subject).to eq('It’s been a while, how are you doing? ♥️')
       expect(log.to).to eq([member.email])
     end
   end
diff --git a/spec/mailers/previews/meeting_invitation_mailer_preview.rb b/spec/mailers/previews/meeting_invitation_mailer_preview.rb
index 706a3f68e..cc16a10ef 100644
--- a/spec/mailers/previews/meeting_invitation_mailer_preview.rb
+++ b/spec/mailers/previews/meeting_invitation_mailer_preview.rb
@@ -6,7 +6,7 @@ def invite
     # In the real work, MeetingInvitation should have been created already and a
     # token should have been assigned. The next lines are for testing purposes.
     invitation = MeetingInvitation.new(meeting: meeting, member: member)
-    invitation.token = "tokenExample28XIcd6IxQ"
+    invitation.token = 'tokenExample28XIcd6IxQ'
 
     MeetingInvitationMailer.invite(meeting, member, invitation)
   end
diff --git a/spec/models/event_spec.rb b/spec/models/event_spec.rb
index e8e2edf7b..d81bd31e4 100644
--- a/spec/models/event_spec.rb
+++ b/spec/models/event_spec.rb
@@ -1,7 +1,7 @@
 RSpec.describe Event do
   subject(:event) { Fabricate(:event) }
 
-  include_examples "Invitable", :invitation, :event
+  include_examples 'Invitable', :invitation, :event
   include_examples DateTimeConcerns, :event
 
   context 'validates' do
@@ -16,7 +16,7 @@
     it { is_expected.to validate_numericality_of(:coach_spaces) }
     it { is_expected.to validate_numericality_of(:student_spaces) }
 
-    context "#invitablility" do
+    context '#invitablility' do
       it 'does not validate if invitable false' do
         event.invitable = false
         event.coach_spaces = nil
diff --git a/spec/models/meeting_spec.rb b/spec/models/meeting_spec.rb
index 9a1b0dcb3..859377ac4 100644
--- a/spec/models/meeting_spec.rb
+++ b/spec/models/meeting_spec.rb
@@ -1,5 +1,5 @@
 RSpec.describe Meeting do
-  include_examples "Invitable", :meeting_invitation, :meeting
+  include_examples 'Invitable', :meeting_invitation, :meeting
   include_examples DateTimeConcerns, :meeting
 
   context 'validations' do
diff --git a/spec/models/workshop_spec.rb b/spec/models/workshop_spec.rb
index 8b340c369..30928f04c 100644
--- a/spec/models/workshop_spec.rb
+++ b/spec/models/workshop_spec.rb
@@ -1,13 +1,13 @@
 RSpec.describe Workshop do
   subject(:workshop) { Fabricate(:workshop) }
 
-  include_examples "Invitable", :workshop_invitation, :workshop
+  include_examples 'Invitable', :workshop_invitation, :workshop
   include_examples DateTimeConcerns, :workshop
 
   context 'validates' do
     it { is_expected.to validate_presence_of(:chapter_id) }
 
-    context "#date_and_time" do
+    context '#date_and_time' do
       it 'does not validate if chapter_id blank' do
         workshop.chapter_id = nil
         workshop.date_and_time = nil
@@ -123,7 +123,7 @@
         workshop.rsvp_closes_at = Time.zone.now + 2.hours
 
         workshop.valid?
-        expect(workshop.errors[:rsvp_close_local_date]).to include("must be before the workshop start time")
+        expect(workshop.errors[:rsvp_close_local_date]).to include('must be before the workshop start time')
       end
 
       it 'is valid when close time is before workshop start' do
diff --git a/spec/presenters/workshop_presenter_capacity_spec.rb b/spec/presenters/workshop_presenter_capacity_spec.rb
index a86a2a2bc..98bc80db4 100644
--- a/spec/presenters/workshop_presenter_capacity_spec.rb
+++ b/spec/presenters/workshop_presenter_capacity_spec.rb
@@ -18,7 +18,7 @@
         expect(workshop.attending_students.count).to eq(2)
         expect(workshop.student_spaces).to eq(2)
         expect(presenter.event_student_spaces?).to eq(false),
-                                                   "Expected event_student_spaces? to be false when at capacity (2/2), but got true"
+                                                   'Expected event_student_spaces? to be false when at capacity (2/2), but got true'
       end
     end
 
@@ -33,7 +33,7 @@
         expect(workshop.attending_students.count).to eq(1)
         expect(workshop.student_spaces).to eq(2)
         expect(presenter.event_student_spaces?).to eq(true),
-                                                   "Expected event_student_spaces? to be true when spaces available (1/2), but got false"
+                                                   'Expected event_student_spaces? to be true when spaces available (1/2), but got false'
       end
     end
 
@@ -57,7 +57,7 @@
         expect(workshop_with_zero_spaces.student_spaces).to eq(0)
         expect(presenter_zero_spaces.student_spaces).to eq(20), 'Capacity should come from sponsor'
         expect(presenter_zero_spaces.event_student_spaces?).to eq(true),
-                                                               "Expected event_student_spaces? to be true when sponsor has capacity (1/20), but got false"
+                                                               'Expected event_student_spaces? to be true when sponsor has capacity (1/20), but got false'
       end
     end
   end
@@ -78,7 +78,7 @@
       it 'returns false when no coach spaces are available' do
         expect(workshop.attending_coaches.count).to eq(2)
         expect(presenter.event_coach_spaces?).to eq(false),
-                                                 "Expected event_coach_spaces? to be false when at capacity (2/2), but got true"
+                                                 'Expected event_coach_spaces? to be false when at capacity (2/2), but got true'
       end
     end
 
@@ -92,7 +92,7 @@
       it 'returns true when coach spaces are available' do
         expect(workshop.attending_coaches.count).to eq(1)
         expect(presenter.event_coach_spaces?).to eq(true),
-                                                 "Expected event_coach_spaces? to be true when spaces available (1/2), but got false"
+                                                 'Expected event_coach_spaces? to be true when spaces available (1/2), but got false'
       end
     end
 
@@ -116,7 +116,7 @@
         expect(workshop_with_zero_spaces.coach_spaces).to eq(0)
         expect(presenter_zero_spaces.coach_spaces).to eq(10), 'Capacity should come from sponsor'
         expect(presenter_zero_spaces.event_coach_spaces?).to eq(true),
-                                                             "Expected event_coach_spaces? to be true when sponsor has capacity (1/10), but got false"
+                                                             'Expected event_coach_spaces? to be true when sponsor has capacity (1/10), but got false'
       end
     end
   end
diff --git a/spec/serializers/workshop_calendar_spec.rb b/spec/serializers/workshop_calendar_spec.rb
index 804eef745..6677bbc31 100644
--- a/spec/serializers/workshop_calendar_spec.rb
+++ b/spec/serializers/workshop_calendar_spec.rb
@@ -46,7 +46,7 @@
         expect(event.summary).to eq("codebar @ #{workshop.host.name}")
         expect(event.location.to_s).to eq(AddressPresenter.new(workshop.host.address).to_s)
         expect(event.url.to_s).to eq(invitation_url)
-        expect(event.description).to include("Declining or removing this event from your calendar does not update your invitation")
+        expect(event.description).to include('Declining or removing this event from your calendar does not update your invitation')
         expect(event.description).to include(invitation_url)
       end
     end
diff --git a/spec/services/three_month_email_service_spec.rb b/spec/services/three_month_email_service_spec.rb
index bd17f28a5..d1dc27f52 100644
--- a/spec/services/three_month_email_service_spec.rb
+++ b/spec/services/three_month_email_service_spec.rb
@@ -1,5 +1,5 @@
 RSpec.describe ThreeMonthEmailService, type: :service do
-  describe "#send_chaser" do
+  describe '#send_chaser' do
     subject(:call) { described_class.send_chaser }
 
     around do |example|
@@ -11,8 +11,8 @@
     end
 
     let(:chapter) { Fabricate(:chapter) }
-    let(:students_group) { Fabricate(:group, name: "Students", chapter: chapter) }
-    let(:coaches_group) { Fabricate(:group, name: "Coaches", chapter: chapter) }
+    let(:students_group) { Fabricate(:group, name: 'Students', chapter: chapter) }
+    let(:coaches_group) { Fabricate(:group, name: 'Coaches', chapter: chapter) }
 
     let!(:eligible_student) do
       member = Fabricate(:member)
@@ -21,7 +21,7 @@
         :workshop_invitation,
         member: member,
         workshop: Fabricate(:workshop, chapter: chapter, date_and_time: 6.months.ago),
-        role: "Student",
+        role: 'Student',
         attended: true
       )
       member
@@ -41,7 +41,7 @@
         :workshop_invitation,
         member: member,
         workshop: Fabricate(:workshop, chapter: chapter, date_and_time: 1.month.ago),
-        role: "Student",
+        role: 'Student',
         attended: true
       )
       member
@@ -54,7 +54,7 @@
         :workshop_invitation,
         member: member,
         workshop: Fabricate(:workshop, chapter: chapter, date_and_time: 4.months.ago),
-        role: "Student",
+        role: 'Student',
         attended: true
       )
       member
@@ -85,60 +85,60 @@
         :workshop_invitation,
         member: member,
         workshop: Fabricate(:workshop, chapter: chapter, date_and_time: 14.months.ago),
-        role: "Student",
+        role: 'Student',
         attended: true
       )
       member
     end
 
-    it "emails only students who have not attended in the last 3 months and were not emailed before" do
+    it 'emails only students who have not attended in the last 3 months and were not emailed before' do
       expect { perform_enqueued_jobs { call } }.to change(MemberEmailDelivery, :count).by(2)
 
       expect(MemberEmailDelivery.where(member: eligible_student)).to exist
       expect(MemberEmailDelivery.where(member: student_with_old_attendance)).to exist
     end
 
-    it "does not email a member already present in member_email_deliveries" do
+    it 'does not email a member already present in member_email_deliveries' do
       expect { perform_enqueued_jobs { call } }
         .not_to change { MemberEmailDelivery.where(member: already_emailed_student).count }
     end
 
-    it "does not email students with a recent attended workshop" do
+    it 'does not email students with a recent attended workshop' do
       expect { perform_enqueued_jobs { call } }
         .not_to change { MemberEmailDelivery.where(member: student_with_recent_attendance).count }
     end
 
-    it "does not email members without a student subscription" do
+    it 'does not email members without a student subscription' do
       perform_enqueued_jobs { call }
 
       expect(MemberEmailDelivery.where(member: coach_member)).to be_empty
       expect(MemberEmailDelivery.where(member: unsubscribed_member)).to be_empty
     end
 
-    it "does not email banned students or students without accepted terms" do
+    it 'does not email banned students or students without accepted terms' do
       perform_enqueued_jobs { call }
 
       expect(MemberEmailDelivery.where(member: banned_student)).to be_empty
       expect(MemberEmailDelivery.where(member: student_without_toc)).to be_empty
     end
 
-    it "does not email students who have not attended in the past year" do
+    it 'does not email students who have not attended in the past year' do
       perform_enqueued_jobs { call }
 
       expect(MemberEmailDelivery.where(member: student_with_very_old_attendance)).to be_empty
     end
 
-    it "sends only one chaser for a member with multiple student subscriptions" do
+    it 'sends only one chaser for a member with multiple student subscriptions' do
       member = Fabricate(:member)
       other_chapter = Fabricate(:chapter)
-      other_students_group = Fabricate(:group, name: "Students", chapter: other_chapter)
+      other_students_group = Fabricate(:group, name: 'Students', chapter: other_chapter)
       Fabricate(:subscription, member: member, group: students_group)
       Fabricate(:subscription, member: member, group: other_students_group)
       Fabricate(
         :workshop_invitation,
         member: member,
         workshop: Fabricate(:workshop, chapter: chapter, date_and_time: 6.months.ago),
-        role: "Student",
+        role: 'Student',
         attended: true
       )
 
@@ -147,21 +147,21 @@
       expect(MemberEmailDelivery.where(member: member).count).to eq(1)
     end
 
-    it "sends only one chaser for a member with multiple qualifying old attendances" do
+    it 'sends only one chaser for a member with multiple qualifying old attendances' do
       member = Fabricate(:member)
       Fabricate(:subscription, member: member, group: students_group)
       Fabricate(
         :workshop_invitation,
         member: member,
         workshop: Fabricate(:workshop, chapter: chapter, date_and_time: 5.months.ago),
-        role: "Student",
+        role: 'Student',
         attended: true
       )
       Fabricate(
         :workshop_invitation,
         member: member,
         workshop: Fabricate(:workshop, chapter: chapter, date_and_time: 4.months.ago),
-        role: "Student",
+        role: 'Student',
         attended: true
       )
 
@@ -170,40 +170,40 @@
       expect(MemberEmailDelivery.where(member: member).count).to eq(1)
     end
 
-    it "does not send chasers when there are no eligible members" do
+    it 'does not send chasers when there are no eligible members' do
       Fabricate(
         :workshop_invitation,
         member: eligible_student,
         workshop: Fabricate(:workshop, chapter: chapter, date_and_time: 1.month.ago),
-        role: "Student",
+        role: 'Student',
         attended: true
       )
       Fabricate(
         :workshop_invitation,
         member: student_with_old_attendance,
         workshop: Fabricate(:workshop, chapter: chapter, date_and_time: 1.month.ago),
-        role: "Student",
+        role: 'Student',
         attended: true
       )
 
       expect { perform_enqueued_jobs { call } }.not_to change(MemberEmailDelivery, :count)
     end
 
-    it "emails a student member who has recent attendance only as a coach" do
+    it 'emails a student member who has recent attendance only as a coach' do
       member = Fabricate(:member)
       Fabricate(:subscription, member: member, group: students_group)
       Fabricate(
         :workshop_invitation,
         member: member,
         workshop: Fabricate(:workshop, chapter: chapter, date_and_time: 6.months.ago),
-        role: "Student",
+        role: 'Student',
         attended: true
       )
       Fabricate(
         :workshop_invitation,
         member: member,
         workshop: Fabricate(:workshop, chapter: chapter, date_and_time: 1.month.ago),
-        role: "Coach",
+        role: 'Coach',
         attended: true
       )
 
diff --git a/spec/support/select_from_tom_select.rb b/spec/support/select_from_tom_select.rb
index bb48a8e39..b11039a95 100644
--- a/spec/support/select_from_tom_select.rb
+++ b/spec/support/select_from_tom_select.rb
@@ -41,7 +41,7 @@ def select_from_tom_select(item_text, from:)
     # Click the matching option
     # Use JavaScript click to avoid element interception issues
     option = wrapper.find('.ts-dropdown .option', text: item_text, match: :prefer_exact)
-    page.execute_script("arguments[0].click();", option.native)
+    page.execute_script('arguments[0].click();', option.native)
   end
 
   # Remove an item from a TomSelect multi-select
diff --git a/spec/support/shared_examples/behaves_link_member_viewing_workshop.rb b/spec/support/shared_examples/behaves_link_member_viewing_workshop.rb
index 300abb5a0..90c1cd3ab 100644
--- a/spec/support/shared_examples/behaves_link_member_viewing_workshop.rb
+++ b/spec/support/shared_examples/behaves_link_member_viewing_workshop.rb
@@ -2,7 +2,7 @@
   context workshop_type do
     let(:workshop) { Fabricate(workshop_type) }
 
-    scenario "allowed can manage" do
+    scenario 'allowed can manage' do
       member = Fabricate(member_type)
       login(member)
       visit workshop_path(workshop)